.page_content{
  background: #f5f5f5;
  height: 100vh;
  overflow: auto;
}
.scroll_box{
  position: absolute;
  top: 5px;
  bottom: 5px;
  left: 0;
  width: 100%;
}
.bottom_block{
  height: 130px;
  text-align: center;
  line-height: 40px;
  font-size: 28px;
  color: #666;
}
.bottom_button{
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: #6190e8;
  text-align: center;
  color: #fff;
  font-size: 36px;
  font-weight: 600;
  height: 90px;
  line-height: 90px;
  letter-spacing: 10px;
}
.bottom_button:active{
  background: #6190e8;
  opacity: 0.7;
}